Bar systems may be utilized by denture wearers who use overdentures, removable partial dentures, and implant prosthesis. Bars may be rigid or resilient, permitting free movement of the prosthesis to direct forces away from the retaining abutments to the supportive bone and tissue. Bars provide more stability and retention than studs with the additional benefit of abutment splinting. Bar systems are generally in one of three types:
- Direct Retainers, such as the Hader or Dolder bar systems
- Incorporated into the bar, such as Locator or Clix bar attachments.
- Offset attachments, such as the Plunger Loc, Sagix, or Vertix.
The shape of the bar is indicated by the amount of room available, by the shape of the alveolar ridge, and the type of construction. Do not engage labial soft tissue undercuts with the denture base flange, as this will alter the path of insertion and cause excessive wear and servicing requirements.
The Hader Bar and rider system is an implant supported overdenture structure and is the most popular of all bar systems due to its economy and simplicity.
- The system allows the prosthesis to rotate around the bar.
- Hader bars provide both stability and retention.
- Common application is processing the Hader Metal Housings into the denture utilizing the Hader Processing Spacers, and then using one of the four grips of plastic Hader clips in the metal housings.
- Relines or making a new prosthesis is made easy by using the Hader White Delrin Analog or Aluminum Analog.
- Choose either the thin (0.2mm) metal housings for accurate seating of the plastic clips or the new Alignment Housings.
4 grips of Hader clips–the reduced retention white, standard retention yellow, increased retention red, and the salvage Blue clips for worn bars.
When utilized with the metal housings, adjusting retention for the patient is simple–remove the present clip and insert the proper retention clip.
Universal Plunger Loc
A titanium locking pin attachment designed for resilient or rigid retention on implant bars, telescopic, or partial denture constructions.
Preci (Dolder) Bar
Dolder Bar by Dr. E.J. Dolder of Switzerland. Bar and sleeve attachment for retaining removable partial dentures and overdentures. The pear, or ovoid, shape is used for a resilient prosthesis. The U-shape is for a rigid or non-resilient prosthesis.
- The U-shaped (rigid) is abutment supported for maximum stability and strength.
- The pear shaped (resilient) is the most tissue-born bar available, as it allows for both vertical and rotational movement.
The Preci Bar may be soldered to post copings, implant abutments, or crowns of precious or semi-precious alloys. The Plastic-Wax Preci Bar may be cast with any dental alloy, including non-precious. The Plastic-Wax bar is cast directly with the abutments. The following instructions detail use of the pre-fabricated precious metal Preci Bar.
LOCATOR Bar Attachment
The new LOCATOR Bar Attachment System contains the same self-aligning feature, superb retention, long lasting durability, and low attachment profile that you currently enjoy with our top selling LOCATOR Attachments. Now these benefits are available for your immediate use when the splinting of implants is required with a bar for added stability.
You have three (3) LOCATOR Attachment choices:
- Drill & Tap
- Laser Weld
Clix Ball Attachment
All previous balls–on overdentures for roots and implants, on crowns for removable partial dentures, and on top of bars for implant or root supported bridges–engaged the height of contour of the sphere to provide retention. This small area, or band of retention, may lead to early attachment wear and possibly frequent adjustment or replacement of the female unit.
The Clix design allows the female to engage all around the ball for an increased area of retention. Besides far greater retention than other spherical systems, the Clix offers the patient security of an audible click.
A bar clip attachment that allows free movement of the prosthesis. Its applications are for overdentures and implant prosthetics. The principle feature of the Ackermann Clip is that the bar may be adjusted to follow not only the vertical contours of the mucosa, but also the anterior-posterior curvature of the edentulous ridge. The spacer provides for both vertical and rotational free movement of the prosthesis. The clip is fully adjustable and easy to insert and remove.
Wide field of applications, as the bar may be bent in all directions allowing it to exactly follow the contours of the ridge.
The Ackermann may be used for square or curved arches and allows the overdenture to reside naturally while sits on the gum.
Due to its short 3.6mm length, the sleeve may be positioned on the bar even in a deep narrow trough.
Castable Spherical Attachment (CSA)
- Reinforcement for the sphere
- Increased strength of the sphere (1)
- Guide for the alignment of the cap (2)
- Cast meta cooling more balanced
May be used on the side of a cast bar when vertical space is limited, and also on the distal of an abutment crown for removable partial dentures.
- Locator for titanium and precious alloys
- CSA for titanium
- Vertix for titanium
- Clix for titanium and precious alloys
- Preci Profile titanium bar structure
A round bar is useful in situations where the bar must be bent to accommodate the ridge anatomy, or in close-bit situations.
Ceka Revax Hybrid Bar
A bar supported removable prosthesis that is bar and abutment supported in the anterior region, and tissue supported in the posterior region.